Antenna



FIG. 1 is a front elevation view of an antenna with a base in broken lines;

FIG. 2 is a side elevation view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a rear elevation view thereof; and,

FIG. 6 is a top perspective view thereof.

The outermost solid lines define the bounds of the claimed design, wherein the regions within the solid lines constitute the claimed design.

The broken lines are for illustration purposes only and form no part of the claimed invention. 

CLAIM The ornamental design for an antenna, as shown and described. 